Lighting apparatus



Nov. 8, 1927.

G. MARKOVITCH LIGHTING APPARATUS Filed May 1927 Attorney;

v1. HIIIIII II" III III:

Patented Nov. 8, 1927. t

UNITED STATE OFFICE.

eanonn maaxovrrcn, or 'monransn, QUEBEC, cannon.

- '"Appllcatton tied May 16,

The present invention relates to improvements in fuelburners and has particular reference to lighting devices.

' I of fuel from the burners of a stove.

A further object of the invention'is the provision of a lighting apparatus which will be automatically operated slmultaneopsly with the operation 0 the fuel control valves ofaburner.

A still further object of the invention is to provide mechanism of the above character- WhlCh will effect ignition of the'gas or other fuel issuing from a burner and which W111 automatically cut off the lighter at a predetermined period of time.

Still another object of the invention is the provision of lighting apparatus which can be employed for the operation of a plurality of burners from a single lighting burner.

Another object of the invention is the provision of mechanism of the above character which will be simple and reliable in operation and durable in construction. 7 a

' Other objects and advantagesof the nvention will become apparent as thedescription progresses. I

In the accompanying drawing forming a part of this specification and in which l1 ke reference characters are employed to des1gnate corresponding parts throughout the same:

Figure 1 is a top plan view illustrating a plurality of fuel burners with my improyed mechanism operatively associated therewlth. Figure 2 is an enlarged fragmentary plan view showing the device in operation,

Figure'3 is an enlarged vertlcal sectio through the operating structure,

Figure 4 is a horizontal sectional view taken from thestructure shown in Figure 3, and

Figure 5 is a detail View illustrating one ;of the operating elements.

Referrin to the drawing, wherein for the purpose ,0 illustration is shown the preferred embodiment of my invention, the numeral 10 generally designates a main fuel supply conduit or header usually extending transversely of a stove at its forward edge. Mounted in spaced rectangular arrangement on the' stove horizontally inward of the 1927. Serial No. 191,758.

header are a plurality of burners 11 usually formed with a series of radial extensions 12 provided with a plurality of fuel outlets in their upper surface. The outer burners are connected with the header 10 by straight connecting conduits 13 communicating with the header and the adjacent burner. The inner burners. are connected by relatively long branch connecting conduits 14 with the header and communicating therewith. The flow of fuel, in the present instance gaseous fuel to the burners is controlled by means of burner control valves 15 operatively mounted in the branch conduits adjacent the connection with the header. 1 These control valves commonly embody vertical rotatably mounted stems swung in a segmental are by means of horizontal handles '16.

- The foregoing structure-is of conventional design and is merely illustrated to designate the application of my improved mechanism in association therewith. This mechanism generally embodies a central longitudinall extending lighter conduit 17 connecte to and communicating with the header 10 and provided at its inner end with a distributing burner cap 18 formed with a plurality of openings adapted to direct the light jets toward the burner in operative position. An essential feature of the present invention resides; in providing mechanism operatively mounted in the lighter conduit and connected with the fuel control valves 15 of each burner so that the operation of each burner control valve will independently operate the lighter to ignite the gas issuing from the burner outlets. Furthermore, the structure is designed so that the lighter ,will function momentarily, during a sutfiand will then be automatically cut off so that only a relatively small pilot light will be constantly maintained at the lighter burner without affecting the continued operation of the fuel burners.

With this in mind, I mount a lighter control valve 19 in the lighter conduit 17 adjacent its connection with the header, this valve embodying a vertically disposed body 20 formed with a vertically extending ta pered bore and a transverse continuous passage intersecting the bore, this passage ex tending through outlet nipples which are connected with the header 10 and the lighter conduit 17. Rotatably positioned withinthe valve body 20 is a valve stem 21, the inter mediate portion being tapered so as to be snugly mounted in the valve body while the upper end is formed with a knob 22. The lower portion of the stem depends downwardly below the body and is formed with a non-circular preferably square shank 23. Rigidly secured to the lower intermediate portion of the stem 21 immediately below the valve body 20 is a transverse roller supportin bar 24 carrying horizontal rotatable ro ers 25 at its outer ends. These rollers referably extend beyond the ends of the ar 24, the purpose of which will be present- 1 indicated. Positioned about the interme iate ortion of the stem 21 between the bar 24 and the lower end of the valve body 20 is a compression s ring 26 adapted to maintain the stem tight y in position in the valve.

. Slidably fitted upon the non-circular shank 23 in vertically aligned positions, are a number of ratchet wheels 27, correspond ing to the number of burners'fof the stove. Formed integral with the ratchet wheels 27 .I- and projecting below thesame are circular bearings 28 of substantially reduced'diameter with respect to the diameter. of the ratchets' Rotatably mounted upon the bearings 28 of the ratchet wheels are horizontally extending operating levers 29 formed with inner circu aropenings adapted to be rotatably fitted upon the bearings 28, each carrying, a ivoted pawl 30 urged into engagement with the corresponding ratchet by means of a spring 31. Each ratchet wheel and leveris supported against vertical dis placement by'means of a washer32 held in ,positionby' a transverse pin 33 extending through-a suitable opening in the shank. The lowermost ratchet wheel and actuating;

lever arelheld in place by a screw 34 threaded in the lower end of the shank. In normal inoperative position, the levers 29 are arranged in vertically superposed positions substantially parallel withxthe extension of the burner supply conduits 13 and 14.

- Eacbof the burner supply valves 15 carries a radially extending lever 35 fixed to the lower end of the valve stem and arranged substantially parallel with the levers I 29 carried by the llghter valve. The levers 35 of each supply valve are connected with one of the operating levers 29 by means oflongitudinal connecting bars 36 pivotally connected to the ends of the levers for s1- multaneous operation thereof. Thus, as the burner supply valves 15 are opened the lever 35, of'the particular valve being operated, is rotated through asegmental are, simultaneously swinging a corresponding operating lever 29. During this movementv of the operating lever the pawl 30 carried thereby is adapted to positively engage the corresponding ratchet 27 and rotate the lighter valve stem 21 so as to permit the flow of gas through the lighter to project the lighter jets to each of the burners thus igniting the gas flowing from the burner. In'this connection it is to be noted that the intermediate portion of the valve stem 21 is provided with a continuous annular groove v37 registering with the passage formed in the valve bod so that a continuous restricted. gas supp y is constantly de: livered to the lighter burner 18 for the maintenance of a permanent pilot light. In this manner, each of the burner supply valves is arranged to independently actuate the lighting mechanism without affecting the remaining burners.

A further feature of the present invention resides in the provision of automatically operable mechanlsm for cutting oil the lighter supply valve adjacent the end of the burner va ve movement so that the lighter is in operation during themajor portion of the opening movement of the burner valve so that ignition of the gas is assured. This is accomplished b securing a vertical plate 38 at the outer si e of the lighter valve 19, a pair of parallel horizontally extending guide rods 39 being secured to the lower portion of this plate and projecting inwardly therefrom. A transverse bar 40 provided with spaced openings or sleeves is slidably positioned on the guiderods 39 and constantly urged tightly against the rollers 25 by means of'a compression spring 41 positioned about the rods 39 between the bar 40 and a collar 42 fixed adjacent the inner endsofthe rods. Thus, when the: lighter valve is v in closed position the rollers are arranged transverse- ,ly and? securel held in this position by means of the ar 40 which cont'actswith both rollers. When'any of the burner valves is opened, the roller supporting-bar24 and rollers 25 pivoted thereon are rotated from a transverse to a' right angular positionf'a's shown'in Figure 4. The right angular position of the rollers is attained immediately prior to the complete opening position of the ios urner valves, the final opening movement to move beyond a perpendicular position so thatthe spring'41 and the bar will cause the bar 24 -'to;complete" its rotation and return the bar toatransverse positionj'sim'ul- "of the valves causing the contactin roller taneously rotating I the stem of the lighter valve and cutting ofi the lighter gas supply. During the cut off movement of the lighter valve, the ratchets 27 will idly rotate against the pawls 30 so that the operating'levers 29 are unaffected and remain stationary.

From the foregoing description and the drawing, it will be readily apparent that the present invention provides an apparatus designed to ignite the gases flowing from one on series of burners and is so arranged that each of the burner valves will independently operate the lighter without affecting the remi i g ne s w e her acti e or ina tive;

1 urthermore, the flame of the burners may be regulated, the only requirement being that the initial operation of the burner supply valves be a complete opening movement after which the flow of gases may be reduced Without in any manner affecting the lighter. o

It is to be understood that the form of my invention herein shown and described is to be taken as a preferred example of the same, and that various changes as to the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus fully described my invention, I claim:

1. A lighting apparatus for fuel burners comprising a lighting fuel conduit connected with the main burner supply condu t and provided with a burner at its extremity arranged to project lighting jets'to each of the burners of the stove, a valve operatively mounted in the lighting conduit designed to permit a constant flow of fuel to the lighting burner for the maintenance of a pilot light, the said valve being operable to control the passage of lighting fuel to the lighting burner,- mechanism for simultaneously opening the lighter valve during the initial 0pen ing movement of the stove burner valves including a series of ratchets fixed on the lighter valve stem, a plurality of levers rotatable about the stem adjacent the ratchets, the said levers carrying spring pressed pawls periodically engageable with the ratchets, mechanism operatively connecting. each of the levers with one of the control valves of the burners so that the stem may be rotated independently by each of the burner valves, and mechanism for automatically closing the lighter valve independently of the burner operating structure after a predetermined opening movement of the burner valves.

2. A lighting apparatus for fuel burners comprising a lighting fuel conduit connected with the main burner supply conduit and provided with a burner at its extremity arranged to project lighting jets .to each of the burners of the stove, a valve operatively,

mounted in the lighting conduit designed to permit a constant flow of fuel to the lighting burner for the maintenance of a pilot light, the said valvebeing operable to control the passage of lighting fuel to the lighter burner, mechanism for simultaneously opening the lighter valve during the initial opening movement of the stove burner valves including a series of ratchets fixed on the lighter valve stem, a plurality of levers rotatably about the stem adjacent the ratchets, the said levers carrying spring pressed pawls periodically engageable with the ratchets, mechanism operatively connecting each of the levers with one of the control valves of the burners so that the stem may be rotated independently by each of the burner valves, the-said automatic closing mechanism in cluding a transverse member fixed to the stem of the lighter valve, a pair of rollers rotatably mounted in the outer ends of the transverse member, and a resiliently pressed plate engageable with the rollers adapted to return the same to closing position after a predetermined movement of the stem.

In witness whereof I have hereunto set my hand.

GRECHA MARKOVITCH. 

